A Simple Fringing Field Impedance Sensor to Measure the Quality of Toned Milk

Pure milk consists of many nutritious elements which are vital requirement for growth and development of humans. Increase in the demand of milk led to fraudulent practices by the dairy industries to boost production for financial gain. The researchers explore the inexpensive sensors which are accurate, where data can be stored and automated and the instrument can be made handy. In this work a simple copper clad impedance sensor is used to detect the adulteration of water in milk. When the sensor is immersed in milk, the impedance and conductance value vary due to variation of water in milk samples. The experiments were conducted to measure the quality of toned milk. The impedance value of the sensor increases with increase in water content in original milk. The sensor shows remarkable performance with different concentration of water in milk samples.